Skyjack SJIII 3220 Service Manual
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Skyjack SJIII 3220 Service Manual

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See also: Operation & Maintenance Manual , Operating Manual
SERVICE MANUAL (KC)
DC ELECTRIC SCISSORS
MODELS
SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632
157935AD
November 2013

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Summary of Contents for Skyjack SJIII 3220

  • Page 1 SERVICE MANUAL (KC) DC ELECTRIC SCISSORS MODELS SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935AD November 2013...
  • Page 2 Skyjack Brasil Alameda Júpiter, 710 American Park Empresarial Indaiatuba, SP, Brasil 13347-653 Tel.: +55 19 3936 0132 Skyjack Australia Pty Ltd. 4 Coates Place, Wetherill Park New South Wales 2164 Australia Phone: +61 (0) 28786 3200 Fax: +61(0) 28786 3222...

  • Page 3: Sjiii Dc Electric Skyjack

    Table of Contents Section 3 - Schematics Table of Contents Section 4 - Troubleshooting Table of Contents Section 5 - Procedures Table of Contents SJIII DC Electric SKYJACK, Page 3 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 4: Sjiii 3220 Sjiii 3226 Sjiii 4620 Sjiii 4626 Sjiii

    IMPORTANT indicates a procedure) essential for safe operation and which, if not followed, may result in a malfunction or damage to the aerial platform. SKYJACK, Page 4 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 5: Table Of Contents

    Maintenance and Inspection .............................15 Maintenance Instructions ............................15 Tables Owner’s Annual Inspection Record ........................16 Maintenance and Inspection Checklist ......................17 Scheduled Maintenance Scheduled Maintenance Inspections ......................18 Function Tests..............................25 SJIII DC Electric SKYJACK, Page 5 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 6 Notes SKYJACK, Page 6 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 7: Purpose Of Equipment

    SKYJACK warrants each new SJIII Series work platform to be free of defective parts and workmanship for the first 24 months. Any defective part will be replaced or repaired by your local SKYJACK dealer at no charge for parts or labor.

  • Page 8: Scope Of This Manual

    Common sense dictates the use of protective clothing when working on or near machinery. Use appropriate safety devices to protect your eyes, ears, hands, feet and body. Any modifications from the original design are strictly forbidden without written permission from SKYJACK Inc. WARNING Risk of an electric shock - Do not remove an Anti-Static Strip from the aerial platform.

  • Page 9: Electrocution Hazard

    Over 350KV to 500KV Over 500KV to 750KV Over 750KV to 1000KV FAILURE TO AVOID THIS HAZARD WILL RESULT IN DEATH OR SERIOUS INJURY! 60023AD-ANSI SJIII DC Electric SKYJACK, Page 9 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 10: Safety Precautions

    • DO NOT ascend or descend grade when elevated. When fully-lowered, ascend or descend grades up to maximum rated inclines listed Table 4-3a Table 4-3b. SKYJACK, Page 10 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 11 • AVOID overhead obstructions. limit switches or other safety aware overhead devices. obstructions or other possible hazards around aerial platform when lifting or driving. SJIII DC Electric SKYJACK, Page 11 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 12 • Be aware of moving equipment in the area. Take another object to steady the platform. appropriate actions to avoid collision. SKYJACK, Page 12 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 13: Maintenance And Inspection Schedule

    Preventive maintenance is the easiest and least expensive type of maintenance. properly must be immediately tagged and removed from service until proper repairs are completed. SJIII DC Electric SKYJACK, Page 13 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 14: Hydraulic System & Component Maintenance And Repair

    The sample should be analyzed 3. Keep all connections tight. by a qualified lubrication specialist to determine if it is suitable for continued use. SKYJACK, Page 14 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 15: Service And Maintenance

    - Disconnect the battery by turning the main power disconnect switch to the “OFF” position. • Repair any damaged or malfunction components before operating aerial platform. • Keep records on all inspections. SJIII DC Electric SKYJACK, Page 15 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 16: Owner's Annual Inspection Record

    Do not use the aerial platform if an inspection has not been recorded in the last 13 months. Pictorial Description Inspection Date Inspector Signature SKYJACK, Page 16 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 17: Schedule Maintenance Inspections

    D - Perform Scheduled Maintenance Inspection every 2 years. Refer to Section 1 of this manual. * Perform scheduled inspection every three months or 150 hours. † - Refer to Skyjack's website @ www.skyjack.com for latest service bulletins porior to performing quarterly or yearly inspection. Note: Make a copy of this page or visit the Skyjack web site:www.skyjack.com for a printable copy.

  • Page 18: Scheduled Maintenance Inspections

    • base to platform cables and wiring harness • broken or missing actuator arm • battery tray wiring harnesses • missing fasteners • hydraulic/electrical wiring harnesses • loose wiring SKYJACK, Page 18 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 19 • Brakes Ensure there are no loose or missing parts and there is no visible damage. Ensure tabs are not locked. SJIII DC Electric SKYJACK, Page 19 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 20 Explosion hazard. Keep flames and sparks away. Do not smoke WARNING near batteries. Use original or manufacturer-approved parts and components for the aerial platform. SKYJACK, Page 20 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 21 Check wheel motor assembly for loose or missing parts and signs of visible damage. Ensure wheels are aligned and true vertically and horizontally. SJIII DC Electric SKYJACK, Page 21 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 22 Component Maintenance and Repair. • Hydraulic Pump and Motor Ensure there are no loose or missing parts and there is no visible damage. SKYJACK, Page 22 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 23 Ensure attachment rings are secure and no visible damage. • AC Outlet on Platform Ensure outlet has no visible damage and free from dirt or obstructions. SJIII DC Electric SKYJACK, Page 23 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 24 Ensure all pins are properly secured. Ensure cables and wires are properly routed and shows no signs of wear and/ or physical damage. SKYJACK, Page 24 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 25: Function Tests

    1.2-1 Test Main Power Disconnect Switch At rear of the base, turn main power disconnect switch to “ ” off position. Result: Aerial platform functions should not operate. SJIII DC Electric SKYJACK, Page 25 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 26 2. Select off/platform/base key switch to “ ” platform position. Attempt to raise or lower the platform. Result: Platform raising and lowering functions should not operate. SKYJACK, Page 26 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 27 4. To restore normal operation, depress and turn holding valve manual override knobs 5. Reengage the brake. clockwise. SJIII DC Electric SKYJACK, Page 27 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 28 Use the ladder of aerial platform to access platform. Close the gate. On platform control console, pull out “ ” emergency stop button. SKYJACK, Page 28 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 29 Result: Aerial platform should move in reverse direction, and then come to a stop. SJIII DC Electric SKYJACK, Page 29 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 30 Result: Aerial platform should come to a stop. If aerial platform pulls to one side while stopping, do not operate aerial platform until brake adjustments have been checked. SKYJACK, Page 30 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 31 • Test Horn under battery tray. Result: Aerial platform should not move forward or backward. 1. Push “ ” horn pushbutton. Result: Horn should sound. SJIII DC Electric SKYJACK, Page 31 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 32 2 meters (7 feet) is reached and attempt to drive forward or reverse. Result: Aerial platform should move slower than when it was in stowed position. SKYJACK, Page 32 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 33: Table Of Contents

    MAINTENANCE TABLES AND DIAGRAMS Table of Contents Tables Specifications and Features ..........................2 Floor Loading Pressure .............................5 Maximum Platform Capacities (Evenly Distributed) ..................6 Torque Specifications ............................7 SJIII DC Electric SKYJACK, Page 1 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 34 1064AB_KC_Specs * Weight with standard 0.9 m extension platform. (Refer to nameplate for aerial platforms with 1.5 m or 1.8 m extension platform.) SKYJACK, Page 2 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 35 Intermixing tires of different types or using tires of types other than those originally supplied with this equipment can adversely affect stability. Therefore, replace tires only with the exact original Skyjack-approved type. Failure to operate with matched approved tires in good condition may result in death or serious injury.
  • Page 36 The LCP or OUP that an individual surface can withstand varies from structure to structure and is generally determined by the engineer or architect for that SKYJACK, Page 4 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 37 Failure to avoid this will prevent operation of all normal controls/functions of the aerial platform. To resume normal operation remove the additional loads. SJIII DC Electric SKYJACK, Page 5 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 38 33.9 33.9 40.68 47.46 Newton-meter = Nm Foot-pound = ft-lb Inch-pound = in-lb Additional Torque Specifications may be found in Section 3. 60655AA SKYJACK, Page 6 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 39: Sjiii Dc Electric Skyjack

    Notes SJIII DC Electric SKYJACK, Page 7 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 40: Sjiii 3220 Sjiii 3226 Sjiii 4620 Sjiii 4626 Sjiii

    Notes SKYJACK, Page 8 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 41 3.15 Main Manifold Harness and Holding Valve Harness ..................23 3.16 Electrical Panel Diagram ...........................24 3.17 Horn/Tilt Switch/Flashing Light Diagram ......................25 3.18 Electrical Schematic (Equipped with all options) .....................26 SJIII DC Electric SKYJACK, Page 1 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 42 Notes SKYJACK, Page 2 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 43: Electrical Symbol Chart

    DOUBLE POLE TEMPERATURE SINGLE POLE DOUBLE POLE DOUBLE THROW SWITCH DOUBLE THROW SINGLE THROW RELAY RELAY RELAY TRIPLE POLE RHEOSTAT DIODE DOUBLE THROW RELAY SJIII DC Electric SKYJACK, Page 3 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 44: Hydraulic Symbol Chart

    FOUR WAY TWO WAY THREE WAY VALVE CLOSED CENTER PROPORTIONAL NORMALLY CLOSED PORT OPEN VALVE PRESSURE PILOT LINES Dashed MAIN LINES Solid TRANSDUCER SERVO SKYJACK, Page 4 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 45: Wire Number And Color Code

    7 is red, wire 7A, 7B, and 7C will also be red. SJIII DC Electric SKYJACK, Page 5 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 46 Notes SKYJACK, Page 6 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 47 ORIFICE (0.040” diameter) (Differential) 104434 ORIFICE (0.040” diameter) (Brake) (Models 322x) 137127 ORIFICE (0.020” diameter) (Brake) (Models 46xx) Parts list continued on the following page. SJIII DC Electric SKYJACK, Page 7 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 48 106557 VALVE, Relief (Holding valve) (Models 3226/4626/4632) 107271 VALVE (Emergency lowering) 103136 VALVE (Free-wheeling) 146562 VALVE (Auto reset - brake release) (Models 46xx) SKYJACK, Page 8 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 49: Electrical Components Parts List

    103480 BATTERY, 6 Volt (U2200) B1-B4 106552 BATTERY, 6 Volt (U2500) B1-B4 BATTERY, 6 Volt (T2200) Parts list continued on the following page. SJIII DC Electric SKYJACK, Page 9 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 50 RST1 119629 RESISTOR (2.7K ohm) RST2 146644 RESISTOR (25W-30 ohm) RST3 116505 RESISTOR, Low voltage protection Parts list continued on the following page. SKYJACK, Page 10 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 51 SWITCH, Toggle (Torque) 147053 N.C. CONTACT (Emergency stop) (Base control console) 146658 TILT SWITCH (Models 32xx) 146661 TILT SWITCH (Models 46xx) 103336 HOURMETER SJIII DC Electric SKYJACK, Page 11 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 52: Hydraulic Manifold And Port Identifications

    Relief Valve Lowering Valve 4H-23 Right Steer Valve 4H-15 Reverse Drive Valve Quick Disconnect 4H-24 (If equipped) System Relief Valve Left Steer Valve M138117AA_S3 SKYJACK, Page 12 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 53: Platform Control Console Diagram

    BLUE PIN 7 - PWM 59 ORANGE/BLACK BLACK PIN 8 - GND 02 WHITE PIN 9 - ENABLE VS+ 8A BLUE WHITE/ BLUE SJIII DC Electric SKYJACK, Page 13 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 54: Platform Control Console - Powered Extension Platform Modification Diagram

    PIN 1 - 27 BLACK PIN 2 - 09 WHITE PIN 3 - 26 GREEN PIN 4 - N / U PIN 5 - N / U SKYJACK, Page 14 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 55: Powered Extension Platform Control Console And Harness

    TO POWER CONTROL CONSOLE BACK VIEW EXTENSION PLATFORM CYLINDER HARNESS MALE 1 BLACK (27) 2 WHITE (02) 3 GREEN (26) 4 (N/U) M115592AI1_S3 SJIII DC Electric SKYJACK, Page 15 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 56: Base Control Console Diagram

    PIN 5 - 10E (WHITE/BLACK) (CE) PIN 6 - 8C (BLUE) PIN 7 - 7A (RED/BLACK) PIN 8 - 02 (WHITE) BACK VIEW M149553AA_S3 SKYJACK, Page 16 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 57: Scissor Arm Control Cable Diagram

    (OPT) GREEN BLACK RED (07) (59) ORANGE BLACK BLACK (14) (18) RED BLACK ORANGE (13) BLUE (15) (16) WHITE BLACK WHITE (02) (NOT USED) M146650AB_S3 SJIII DC Electric SKYJACK, Page 17 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 58 PIN 7 - 19 (BLACK) LS1B PIN 4 - 18A (BLACK) PIN 8 - 71 (BLACK/WHITE) BLUE BLACK/WHITE BROWN BLACK LS1A BLUE BLACK/WHITE M156401AA SKYJACK, Page 18 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 59 13 - BLACK HOLDING VALVE (UPPER) PIN 2 - 02 WHITE 02 - WHITE PIN 1 - 13 BLACK PIN 2 - 02 WHITE M146588AA5_S3 SJIII DC Electric SKYJACK, Page 19 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 60 Notes SKYJACK, Page 20 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 61: Hydraulic Schematic (Models 322X)

    ORIFICE ORIFICE MAIN MANIFOLD BLOCK HYDRAULIC LOWERING LOWERING SJ3 3220 NONE VALVE PUMP VALVE SJ3 3226 BLOCK (MANUAL) NONE RETURN FILTER RESERVOIR M156342AB SJIII DC Electric SKYJACK, Page 21 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 62: Hydraulic Schematic (Models 46Xx)

    MAIN MANIFOLD BLOCK LOWERING SJ3 4626 LOWERING NONE VALVE VALVE DCM1 SJ3 4632 (MANUAL) 0.081" DIA BLOCK DC MOTOR HYDRAULIC PUMP RETURN FILTER RESERVOIR M156343AB SKYJACK, Page 22 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 63: Main Manifold Harness And Holding Valve Harness

    59 - ORANGE/BLACK 59 - ORANGE/BLACK 14 - BLACK 02 - WHITE 02 - WHITE BRAKE VALVE 17A - BLUE/RED 02 - WHITE M146669AA2_S3 SJIII DC Electric SKYJACK, Page 23 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 64: Electrical Panel Diagram

    PIN 7 - 49 GREEN/WHITE PIN 15 - 23 BLACK/WHITE HORN/FLASHING LIGHT PIN 8 - 7A GREEN PIN 16 - 60/7A RED/WHITE M156396AB SKYJACK, Page 24 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 65: Horn/Tilt Switch/Flashing Light Diagram

    WHITE - 02 (ANSI - FEM. TERM.) WHITE - 02 (CE - RING TERM.) HORN/FLASHING LIGHT HARNESS 02 - WHITE FROM ELEC. PANEL 22 - GREEN HORN M146648AA_S3B SJIII DC Electric SKYJACK, Page 25 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 66: Electrical Schematic (Equipped With All Options)

    FORWARD SOLENOID DO2-4 S7-6 ENABLE ENABLE 4H-23 BLACK/WHITE RIGHT SOLENOID S7-2 DO2-5 RIGHT 3H-17A BRAKE SOLENOID S7-3 LEFT BLUE/BLACK 4H-24 LEFT SOLENOID DO2-6 M156336AC SKYJACK, Page 26 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 67 4.2-12 All System sluggish ............................... 15 4.2-13 Power Extension Platform will not Extend or Retract ................... 15 4.2-14 High/Low Torque Inoperative ..........................15 SJIII DC Electric SKYJACK, Page 1 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 68 Notes SKYJACK, Page 2 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 69: Introduction

    “probable cause.” The following line, noted by a dash represents the “remedy” to the “probable cause” directly above it. See example below for clarification. 1. Probable Cause Remedy SJIII DC Electric SKYJACK, Page 3 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 70: Electrical System

    3. Loose or broken wire #19A from base terminal block to pressure switch PS1. Check continuity. Replace if defective. 4. Defective pressure switch PS1. Check continuity through switch. Replace if defective. SKYJACK, Page 4 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 71: All Controls Inoperative From Base Control Console

    Check switch. Replace if defective. 8. Defective joystick neutral switch S7-1. Check switch. Replace if defective. 9. Defective joystick S7. Check joystick. Replace if defective. SJIII DC Electric SKYJACK, Page 5 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 72: No Down Or Reverse Only Function From Platform Controls

    Check continuity. Replace if defective. 14. See 4.1-6 and 4.1-9 of this section for more troubleshooting information. 4.1-8 No Down Function from Platform or Base Control Console SKYJACK, Page 6 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 73: No Up Function From Base Control Console

    1. Defective relay 17CR. Check relay. Replace if defective. 2. Loose or broken wire #17B from diodes D23 and D24 to base terminal block TB1. SJIII DC Electric SKYJACK, Page 7 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 74: 14 Drive Only Inoperative

    Check continuity. Replace if defective. 5. Proportional relay 21CCR defective. Check relay, replace if defective. 4.1-18 Work Platform Drives in Slow Speed Only SKYJACK, Page 8 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 75: 19 Forward Drive Function Inoperative

    1. Diode D-16 forward or D-15 reverse is shorted or open. Check diode. Replace if defective. 2. Loose or broken wire #17 from base terminal strip to transfer relay 17CR. SJIII DC Electric SKYJACK, Page 9 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 76: 22 High/Low Torque Inoperative

    Check continuity through coil. Replace if defective. 6. Loose or broken wire #02 from steer right valve coil 4H-23 to base terminal block TB-1. SKYJACK, Page 10 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 77: 24 Left Steer Inoperative

    4H-26. Check continuity. Replace if defective. 3. Extend valve coil 4H-26 defective. Check continuity through coil, replace if defective. 4. Open diode D26. SJIII DC Electric SKYJACK, Page 11 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 78: 27 Power Extension Platform Will Not Retract

    Check continuity. Replace if defective. 4.1-28 Two or more Functions at one time 1. Shorted Diode. Check continuity of all diodes. Replace if defective. SKYJACK, Page 12 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 79: Hydraulic System

    2. Flow divider/combiner FD1 defective or is plugged. Close valve. Replace if defective. 3. Drive motor M1 or M2 defective. Check motors. Replace if defective. SJIII DC Electric SKYJACK, Page 13 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 80: Platform Will Not Drive In Forward Or Reverse

    Rebuild cylinder(s). Replace if damaged. 3. Mechanical binding in king pins. Check for binding. Repair as needed. 4. Orifices 03 plugged. Clean orifices, and reinstall. SKYJACK, Page 14 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 81: 12 All System Sluggish

    4.2-14 High/Low Torque Inoperative 1. Stuck speed valve 3H-18A-1. Clean valve. Replace if defective. 2. Stuck speed valve 3H-18A-2. Clean valve. Replace if defective. SJIII DC Electric SKYJACK, Page 15 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 82 Notes SKYJACK, Page 16 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 83 5.1-3 OEM Controller switch wiring ..........................5 Base 5.2-1 System Relief Pressure Adjustment ........................6 5.2-2 Lift Pressure Adjustment ...........................6 5.2-3 Electronic Tilt Switch Setup Procedure ......................7 SJIII DC Electric SKYJACK, Page 1 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 84 Notes SKYJACK, Page 2 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 85: Service And Maintenance

    There may be some interaction between adjustments, making it necessary to repeat the adjustment in order to achieve the desired response. SJIII DC Electric SKYJACK, Page 3 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 86: Oem Controller Troubleshooting

    The function speed remains constant regardless or enamel based paint. of the degree of handle deflection. A. Perform “Maxout” adjustment procedures. WARNING Do not use RTV silicone. SKYJACK, Page 4 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 87: Oem Controller Switch Wiring

    WHT/RED ENABLE OUT WHT/BLU +24V INPUT WHT/BLK ENABLE 15589 PCB (+24V INPUT) WHT/BLK PWD OUT (A) (ENABLE) WHT/YEL GROUND (-) FORWARD/UP REVERSE/DOWN CONNECTOR SJIII DC Electric SKYJACK, Page 5 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 88: Base

    Remove the gauge from system pressure test Pressure setting may vary as aerial platform port. components wear. The lift pressure should be set for rated load only. SKYJACK, Page 6 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...

  • Page 89: Electronic Tilt Switch Setup Procedure

    The tilt circuit is only powered when Green LED is ready for normal activating a function. operation. Turn main disconnect switch to “ ” off position. SJIII DC Electric SKYJACK, Page 7 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 90 Turn main disconnect switch to “ ” ON position. Verify switch is powered. (Red or green LED will be continually blinking) Red LED Red LED Green LED Green LED SKYJACK, Page 8 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 91 LED will turn on solid for 2 seconds. Red LED Red LED Green LED Green LED Results: The switch is verifying the new zero position. SJIII DC Electric SKYJACK, Page 9 SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 92 On together, no blinking when Green & Red LED fault detected. Tilt Circuit Test Refer to section 2 for test tilt sensor procedure. SKYJACK, Page 10 SJIII DC Electric SJIII 3220 SJIII 3226 SJIII 4620 SJIII 4626 SJIII 4632 157935...
  • Page 94 www.skyjack.com...

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